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/*
* Various utilities for ffmpeg system
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* copyright (c) 2002 Francois Revol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* needed by inet_aton() */
#define _SVID_SOURCE
#include "config.h"
#include "avformat.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include "os_support.h"
#if CONFIG_NETWORK
#if !HAVE_POLL_H
#if HAVE_WINSOCK2_H
#include <winsock2.h>
#elif HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#endif
#include "network.h"
#if !HAVE_INET_ATON
#include <stdlib.h>
#include <strings.h>
int inet_aton (const char * str, struct in_addr * add)
{
unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
return 0;
if (!add1 || (add1|add2|add3|add4) > 255) return 0;
add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
return 1;
}
#endif /* !HAVE_INET_ATON */
/* resolve host with also IP address parsing */
int resolve_host(struct in_addr *sin_addr, const char *hostname)
{
struct hostent *hp;
if (!inet_aton(hostname, sin_addr)) {
hp = gethostbyname(hostname);
if (!hp)
return -1;
memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
}
return 0;
}
int ff_socket_nonblock(int socket, int enable)
{
#if HAVE_WINSOCK2_H
return ioctlsocket(socket, FIONBIO, &enable);
#else
if (enable)
return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
else
return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
#endif
}
#endif /* CONFIG_NETWORK */
#if CONFIG_FFSERVER
#if !HAVE_POLL_H
int poll(struct pollfd *fds, nfds_t numfds, int timeout)
{
fd_set read_set;
fd_set write_set;
fd_set exception_set;
nfds_t i;
int n;
int rc;
#if HAVE_WINSOCK2_H
if (numfds >= FD_SETSIZE) {
errno = EINVAL;
return -1;
}
#endif
FD_ZERO(&read_set);
FD_ZERO(&write_set);
FD_ZERO(&exception_set);
n = -1;
for(i = 0; i < numfds; i++) {
if (fds[i].fd < 0)
continue;
#if !HAVE_WINSOCK2_H
if (fds[i].fd >= FD_SETSIZE) {
errno = EINVAL;
return -1;
}
#endif
if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
if (fds[i].fd > n)
n = fds[i].fd;
};
if (n == -1)
/* Hey!? Nothing to poll, in fact!!! */
return 0;
if (timeout < 0)
rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
else {
struct timeval tv;
tv.tv_sec = timeout / 1000;
tv.tv_usec = 1000 * (timeout % 1000);
rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
};
if (rc < 0)
return rc;
for(i = 0; i < (nfds_t) n; i++) {
fds[i].revents = 0;
if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
};
return rc;
}
#endif /* HAVE_POLL_H */
#endif /* CONFIG_FFSERVER */
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